diff --git a/src/unix/notbsd/android/b32/x86.rs b/src/unix/notbsd/android/b32/x86.rs
index c4b8197de55bcfce4d217bd7673bb6f72719a7d3..bbf78e35b41273fd7f8e37fbdc7ab1b3de460e1a 100644
--- a/src/unix/notbsd/android/b32/x86.rs
+++ b/src/unix/notbsd/android/b32/x86.rs
@@ -4,3 +4,5 @@ pub type wchar_t = i32;
 pub const O_DIRECT: ::c_int = 0x4000;
 pub const O_DIRECTORY: ::c_int = 0x10000;
 pub const O_NOFOLLOW: ::c_int = 0x20000;
+
+pub const MAP_32BIT: ::c_int = 0x40;
diff --git a/src/unix/notbsd/android/b64/x86_64.rs b/src/unix/notbsd/android/b64/x86_64.rs
index 7e824ccce8cec676bf2ed50f18b8f8b7cadc444f..0cbff0a3c56c07b2c11aa5cbde4e8c0a71306a04 100644
--- a/src/unix/notbsd/android/b64/x86_64.rs
+++ b/src/unix/notbsd/android/b64/x86_64.rs
@@ -51,3 +51,5 @@ pub const SYS_gettid: ::c_long = 186;
 
 pub const SIGSTKSZ: ::size_t = 8192;
 pub const MINSIGSTKSZ: ::size_t = 2048;
+
+pub const MAP_32BIT: ::c_int = 0x40;